How to Write a Thesis Statement: Formula, Steps and 15 Examples
Key takeaways
- A thesis statement is one or two sentences stating the main argument of your paper, usually at the end of the introduction.
- An effective thesis is specific, arguable and focused. Someone could reasonably disagree with it.
- A simple formula: Topic + Claim + Reasons ("X is true because A, B and C").
What is a thesis statement?
A thesis statement tells the reader what your paper argues and how. It answers the question your assignment asks, and every paragraph in the paper should support it. Without a clear thesis, an essay reads like a list of facts instead of an argument.
What makes a thesis statement strong?
| Weak | Strong |
|---|---|
| Social media affects teenagers. | Daily social media use of more than three hours harms teenagers' mental health by disrupting sleep, increasing social comparison and reducing face-to-face interaction. |
| This essay is about renewable energy. | Governments should replace fossil-fuel subsidies with solar and wind incentives, because renewables are now cheaper, create more jobs and reduce health costs from pollution. |
| Shakespeare's Macbeth is about ambition. | In Macbeth, Shakespeare shows that unchecked ambition destroys not only its victims but the ambitious person's own conscience. |
The strong versions take a position, give reasons, and preview the essay's structure.
An effective thesis is:
- Specific: it names exactly what you'll argue, not a broad topic
- Arguable: a reasonable person could disagree
- Focused: it can be supported in the length you have
- Supported: you can find evidence for each reason
How to write a thesis in 4 steps
- Start with a question. Turn your prompt into a question: "Should college be free?"
- Answer it. Write your one-sentence position: "Community college should be tuition-free."
- Add your reasons. "…because it expands access, strengthens the workforce and pays for itself through higher tax revenue."
- Refine. Make vague words specific, cut filler, and check that someone could argue against it.
Thesis statement formula and templates
Fill in these templates, then rewrite the result in your own words:
- Argumentative: [Topic] should [position] because [reason 1], [reason 2] and [reason 3].
- Although / however: Although [opposing view], [your position] because [main reason].
- Analytical: In [work], [author] uses [technique] to show [meaning].
- Expository: [Topic] is caused by / consists of [part 1], [part 2] and [part 3].
- Compare and contrast: Although [A] and [B] both [similarity], [A] is [difference] while [B] is [difference].
- Cause and effect: [Cause] leads to [effect 1] and [effect 2], which [significance].
15 thesis statement examples
Argumentative and persuasive
- Cities should ban cars from downtown centers because car-free zones reduce pollution, boost local businesses and improve pedestrian safety.
- Although standardized tests are meant to measure merit, colleges should make them optional because they reflect family income more than ability.
- College athletes should be paid, since they generate millions in revenue, risk serious injury and have little time for paid work.
- Social media platforms should verify users' ages to protect children from harmful content and data collection.
Analytical (literature and rhetoric) 5. In The Great Gatsby, Fitzgerald uses the green light to show that the American Dream is always pursued but never reached. 6. In "I Have a Dream," Martin Luther King Jr. combines biblical language, repetition and patriotic references to persuade a divided nation that civil rights are an American promise. 7. Orwell's 1984 uses the manipulation of language to show that whoever controls words controls thought.
Expository and informative 8. The French Revolution was driven by three forces: financial crisis, Enlightenment ideas and social inequality. 9. Sleep affects academic performance through memory consolidation, attention and mood. 10. Remote work has changed cities by emptying office districts, raising suburban housing demand and reshaping public transport.
Compare and contrast 11. Although online and in-person classes cover the same material, online classes offer more flexibility while in-person classes offer more interaction.
Cause and effect 12. Fast fashion's low prices lead to high textile waste and poor working conditions, costs that consumers rarely see.
Research papers 13. This study finds that nurse-led discharge education reduces 30-day readmissions for heart failure patients. 14. Minimum wage increases in the past decade raised low-wage workers' earnings without the large job losses critics predicted.
Reflective and personal 15. Volunteering at a food bank taught me that leadership often means listening before acting.
How to write an effective thesis: checklist
Before you start writing the essay, check that your thesis:
- ✓ Answers the exact question in the prompt
- ✓ Takes a position someone could disagree with
- ✓ Is one or two sentences long
- ✓ Uses specific words (not "good", "bad", "things", "society")
- ✓ Previews the main points of your body paragraphs
- ✓ Sits at the end of your introduction
Common mistakes
- Stating a fact instead of a claim ("The Earth orbits the Sun.")
- Being too broad ("War is bad.")
- Announcing instead of arguing ("In this essay I will discuss…")
- Listing more points than you can support
- Writing a question instead of an answer ("Should college be free?")
Getting help writing a thesis statement
If you're stuck, try this: write down the one sentence you'd say if a friend asked "So what's your paper arguing?" That answer is usually your thesis, ready to be refined. Then build your essay outline around it and write an introduction that leads up to it.
For personal feedback, a one-to-one tutoring session can help you shape your thesis and outline, or an editor can review your draft through our editing and proofreading service.
Frequently asked questions
Where does the thesis statement go?
Usually as the last sentence or two of your introduction.
How long should a thesis statement be?
One or two sentences, usually 20–40 words. Long research papers can use two sentences, but it should still express one central argument.
Can a thesis be two sentences?
Yes, especially in longer papers, but it should still express one central argument.
Can a thesis statement be a question?
No. A question can introduce your topic, but the thesis is your answer to it.
Can I change my thesis while writing?
Yes, and you often should. Revise your thesis at the end so it matches what your paper actually argues.
Prefer to learn it yourself? Book a one-to-one tutor or see our essay writing help page.